Mercurial > hg4j

annotate src/org/tmatesoft/hg/core/HgAbstractCommand.java @ 599:55b7987c1796

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Do not instantiate intermediate arrays
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 03 May 2013 15:29:26 +0200
parents d68dcb3b5f49
children
rev   line source
215
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
1 /*
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
2 * Copyright (c) 2011 TMate Software Ltd
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
3 *
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
4 * This program is free software; you can redistribute it and/or modify
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
5 * it under the terms of the GNU General Public License as published by
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
6 * the Free Software Foundation; version 2 of the License.
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
7 *
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
8 * This program is distributed in the hope that it will be useful,
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
11 * GNU General Public License for more details.
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
12 *
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
13 * For information on how to redistribute this software under
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
14 * the terms of a license other than GNU General Public License
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
15 * contact TMate Software at support@hg4j.com
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
17 package org.tmatesoft.hg.core;
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
19 import org.tmatesoft.hg.util.CancelSupport;
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
20 import org.tmatesoft.hg.util.ProgressSupport;
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
22 /**
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
23 * intentionally package-local, might be removed or refactored in future
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
24 *
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
25 * @author Artem Tikhomirov
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
26 * @author TMate Software Ltd.
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
27 */
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
28 class HgAbstractCommand<T extends HgAbstractCommand<?>> implements ProgressSupport.Target<T>, CancelSupport.Target<T> {
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
29 private ProgressSupport progressHelper;
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
30 private CancelSupport cancelHelper;
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
31
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
32 @SuppressWarnings("unchecked")
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 public T set(ProgressSupport ps) {
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34 progressHelper = ps;
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
35 return (T) this;
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
36 }
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
37
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
38 @SuppressWarnings("unchecked")
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
39 public T set(CancelSupport cs) {
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
40 cancelHelper = cs;
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
41 return (T) this;
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42 }
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
43
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
44 // shall not return null
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
45 protected ProgressSupport getProgressSupport(Object context) {
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
46 if (progressHelper != null) {
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
47 return progressHelper;
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
48 }
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
49 return ProgressSupport.Factory.get(context);
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
50 }
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
51
322
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
52 // shall not return null if create is true
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
53 // CancelSupport from context, if any, takes precedence
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
54 protected CancelSupport getCancelSupport(Object context, boolean create) {
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
55 CancelSupport rv = CancelSupport.Factory.get(context, null);
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
56 if (rv != null) {
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
57 return rv;
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
58 }
215
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
59 if (cancelHelper != null) {
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
60 return cancelHelper;
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
61 }
322
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
62 if (create) {
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
63 return CancelSupport.Factory.get(null);
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
64 }
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
65 return null;
215
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
66 }
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
67
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
68 }